User Session Length in SEO refers to the amount of time a visitor spends actively engaging with a website during a single visit or session. It measures how long users stay on the site before leaving or becoming inactive.
Synonyms: session duration, visit length, user engagement time, time on site

User Session Length is a key indicator of user engagement and website quality. Longer session lengths often suggest that visitors find the content valuable and relevant, which can positively influence search engine rankings.
SEO professionals analyze session length to understand user behavior and improve website content, navigation, and overall user experience. Enhancing session length can reduce bounce rates and increase conversions.
If a visitor lands on a blog post and spends 5 minutes reading it before navigating to another page or leaving, the session length is 5 minutes. Conversely, a session length of just a few seconds might indicate poor content relevance or usability issues.